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No. 6|3,977. Patented Nov. 8, |898.

w. DRHL.

STEAM RAM.

(Application led N ov. 1, 1897.) (No Model.) 2 Sheets-Sheet I.

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STEAM HAM. (Appliesian ined Nov. 1, 1897.)

Patented Nov. 8, |898.

2 Shouts-'Sheet 2.

(No Model.)

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UNrTED STATES PATENT @Enron woLDEMAE DEi-IL, on EIGA, EUssIA.

SPECIFICATION forming part of Letters Patent No. 613,977, dated November8, 1898.

Application filed November l, 1897. Serial N0. 656.994. (N0 model.)

To all whom it may concern,.- e

Be it known that I, WOLDEMAR DRHL, a subject of the Czar of Russia,residing at Riga, Russia, have invented certain new and usefulImprovements in or Relating to Pile-Drivers and the Like, of which thefollowing is a specification.

My invention relates to a novel construction in a pile-driver, theobject being to provide a simple, durable, and efficient device of thischaracter; and it consists in the features of construction andcombinations of parts hereinafter fully described and claimed.

In the accompanying drawings, illustrating my invention, Figure lis arear elevation of the block or driver, showing the releasingleverlocked. Fig. `2 is a similar elevation showing the releasing-leverreleased. Fig. 3 is a sectional view on the line 3 3 of Fig. l andshowing the releasing -lever released. Fig. 4 is a side elevation of thecar and vertical guides in which said block moves.

Referring' now to said drawings, B indicates a block provided on itssides with guidelugs l, adapted to enter guide-recesses in the paralleluprights 0.2, mounted on the car 2. Said car 2 preferably carries aboiler 3 and engine A, which latter drives the chain-pulley a at thelower ends of said uprights a2, over which and a similar pulley a' atthe upper ends of said uprights a2 a liat-linked chain a is trainedwhich is driven continuously in one direction. Said chain runs on oneside, preferably midway between said uprights or guides 0.2, and isadapted to engage devices on said block B to raise the latter, ashereinafter described.. A recess 4C is provided in said block B,in thetop and rear faces of same, which is crossed transversely by a shaft c,which carries the sleeve d, provided with the arms d and d2. Said armcl' is adapted to be engaged by the chain @,while said arm cl2 isconnected with the upper end of a plunger mounted in a vertical opening5 in said block B, extending from said recess 4 to the bottom of saidblock. Said plunger consists of two members g and t', having a spring hinterposed between them to act as a cushion. `The lower end c" of themember t' is reduced in size and projects downwardly below the lowerface of the block B, at about the center thereof. Said recess 4 isextended downwardly on the rear face of the block B and in suchextension receives devices for locking the arm d in the position shownin dotted lines in Fig. 3, in which position it is engaged by the chaina. Said devices consist of two bars e e, fulcrumed on the shaft f andprovided adjacent their upper ends with shoulders e e', which areadapted toengage the upper face of the arm d to hold same in theposition shown in dotted lines in Fig. 3. Said bars e e are held at theinner limits of their movement and in engagement with said arm d bymeans of the flat springs c2 e2, interposed between the outer faces ofsaid bars and the inner faces of said recess. A wedge k', mounted uponthe end of and normally held at the upper limit of its movement by aspring lo, normally rests with its sharp end in vertical alinement withthe line of contact between the inner faces of the upper portions of thebars e e, so that by bearing on said wedge lo the same would force saidbars e e apart, and thus release the arm d', and im mediately uponrelease of the pressure would resume the position shown in Fig. 1. Assaid block B drops, the parts mounted thereon are in the position shownin Fig. 3. As it strikes the pile the portion t' of the plunger isobviously forced upward and through the medium of the spring h theportion g thereof likewise, thus turning the sleeve d to the po. sitionshown in dotted lines in Fig. 3, when the bars e e spring into theposition shown in Fig. 1, thus holding said arm el' in position. Saidarm d thus projects into the path of the cross-pins b of the chain a,one of which engages said arm and raises it until the wedge lo' comesinto contact with and is depressed by the beam l at the upper ends ofsaid uprights a2, when it spreads the bars e e, and thus releases thearm' d', which immediately turns out of the path of said chain a, thuspermitting the block to drop.

I claim as my inventionl. In a pile-driver, the combination with anendless chain moving vertically between upright guides, of ablockmovable between said guides and provided with devices adapted to engagesaid chain and devices for releasing it from such engagement, saiddevices com- IOO prisin g a lever pivotally mounted in said block andadapted to be swung into engagement with said chain, a spring-actuatedlock adapted to engage said arm to lock same into engagement with saidchain, and a member adapted to release said lock when said block reachesthe upper limit of its movement, whereby said arm will be released fromengagement with said chain to permit said block to drop7 substantiallyas described.

2. In a pile-driver, the combination with an endless chain movingvertically between upright guides, of a block movable between saidguides and provided with devices adapted to engage said chain anddevices for releasing it from such engagement, said devices comprising alever pivotally mounted in said block and adapted to be swung intoengagement with said chain a spring-actuated lock adapted to engage saidarm to lock same into engagement with said chain, and a member adaptedto release said lock when said block reaches the upper limit of itsmovement, said member comprising a wedge adapted to be depressed bycontact with a cross-beam between said upright guides to force saidlocking meehanism out of the path of said arm, whereby said arm will bereleased from engagement with said chain to permit said block to drop',substantially as described.

3. In a pile-driver, the combination With an endless chain movingvertically between upright guides, and a cross-beam between said guides,of a block movable in said guides and provided with an arm pivotallymounted thereon adapted to engage said chain toraise said block, aspring-actuated lock adapted to spring into the path of said arm to locksame into engagement with said chain, a releasingwedge adapted to bedepressed by said crossbeam to release said lock and thereby said arm topermit said block to drop, a plunger connected with said arm andprojecting below said block adapted to strike the pile and be forcedupwardly to throw said arln into the path of said chain to again raisesaid block, substantially described.

In witness whereof I have hereunto set my signature in the presence oftwo subscribing witnesses.

WOLDEMAR DRUI'IL. Vitnesses:

L. LANGE, HEINR. TREGER.

